Flash blog - easy updates

i am building a site for a client in flash
there has to be a blog section on the site

basicly the client will be traveling on the road and will need to be able to enter blog updates from any computer

there needs to be soem sort backend to the site where he can enter a blog entry, hit submit and then have it appear in the flash site blog

i tried doing some stuff with mysql and php but anything i actualy got working would have involved him having to connect to mysql and enter the data himself which i think will be much to complicated
he needs somethign simple
a blank text box
fill it in
hit submit
appears in flash blog

any links to tutorials or any info at all is appriciated